java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:56,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:56,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:56,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:56,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:56,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:56,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:56,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:56,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:56,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:56,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:56,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:56,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:56,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:56,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:56,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:56,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:56,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:56,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:56,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:56,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:56,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:56,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:56,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:56,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:56,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:56,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:56,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:56,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:56,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:56,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:56,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:56,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:56,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:56,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:56,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:56,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:52:56,928 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:56,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:56,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:56,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:56,933 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:56,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:56,934 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:56,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:56,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:56,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:56,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:56,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:56,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:56,936 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:56,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:56,937 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:56,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:56,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:56,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:56,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:56,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:56,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:56,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:56,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:56,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:56,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:56,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:52:57,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:57,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:57,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:57,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:57,244 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:57,244 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2019-10-14 23:52:57,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7d39a16/b54ae9b17ae34769a6ce32d1072fdfcf/FLAG1ed7a2b51 [2019-10-14 23:52:57,773 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:57,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewrev.c [2019-10-14 23:52:57,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7d39a16/b54ae9b17ae34769a6ce32d1072fdfcf/FLAG1ed7a2b51 [2019-10-14 23:52:58,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7d39a16/b54ae9b17ae34769a6ce32d1072fdfcf [2019-10-14 23:52:58,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:58,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:58,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:58,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:58,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:58,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247dfb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58, skipping insertion in model container [2019-10-14 23:52:58,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,192 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:58,207 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:58,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:58,423 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:58,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:58,461 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:58,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58 WrapperNode [2019-10-14 23:52:58,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:58,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:58,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:58,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:58,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:58,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:58,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:58,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:58,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:52:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:52:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:52:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:58,893 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:58,893 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:52:58,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:58 BoogieIcfgContainer [2019-10-14 23:52:58,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:58,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:58,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:58,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:58,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:58" (1/3) ... [2019-10-14 23:52:58,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349b779b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:58, skipping insertion in model container [2019-10-14 23:52:58,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (2/3) ... [2019-10-14 23:52:58,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349b779b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:58, skipping insertion in model container [2019-10-14 23:52:58,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:58" (3/3) ... [2019-10-14 23:52:58,916 INFO L109 eAbstractionObserver]: Analyzing ICFG rewrev.c [2019-10-14 23:52:58,924 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:58,932 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:58,943 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:58,965 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:58,965 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:58,965 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:58,965 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:58,966 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:58,966 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:58,966 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:58,966 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-14 23:52:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:52:58,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:58,988 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:58,990 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:58,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1294486485, now seen corresponding path program 1 times [2019-10-14 23:52:59,004 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142607796] [2019-10-14 23:52:59,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:59,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142607796] [2019-10-14 23:52:59,146 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:59,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:59,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133782976] [2019-10-14 23:52:59,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:59,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:59,173 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-10-14 23:52:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:59,200 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-10-14 23:52:59,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:59,201 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-14 23:52:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:59,211 INFO L225 Difference]: With dead ends: 43 [2019-10-14 23:52:59,211 INFO L226 Difference]: Without dead ends: 22 [2019-10-14 23:52:59,215 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-14 23:52:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-14 23:52:59,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-14 23:52:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-14 23:52:59,287 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2019-10-14 23:52:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:59,288 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-14 23:52:59,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-14 23:52:59,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:52:59,292 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:59,292 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:59,293 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:59,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1653126776, now seen corresponding path program 1 times [2019-10-14 23:52:59,296 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315631526] [2019-10-14 23:52:59,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:59,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315631526] [2019-10-14 23:52:59,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:59,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:59,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620207365] [2019-10-14 23:52:59,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:59,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:59,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:59,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:59,461 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2019-10-14 23:52:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:59,556 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-10-14 23:52:59,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:59,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-14 23:52:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:59,559 INFO L225 Difference]: With dead ends: 41 [2019-10-14 23:52:59,559 INFO L226 Difference]: Without dead ends: 26 [2019-10-14 23:52:59,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-14 23:52:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-10-14 23:52:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-14 23:52:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-14 23:52:59,567 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2019-10-14 23:52:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:59,568 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-14 23:52:59,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-14 23:52:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:52:59,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:59,569 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:59,570 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:59,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1007604157, now seen corresponding path program 1 times [2019-10-14 23:52:59,571 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418320848] [2019-10-14 23:52:59,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:59,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418320848] [2019-10-14 23:52:59,643 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:59,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:52:59,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486555369] [2019-10-14 23:52:59,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:52:59,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:59,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:52:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:59,649 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-10-14 23:52:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:59,708 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-10-14 23:52:59,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:52:59,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-14 23:52:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:59,710 INFO L225 Difference]: With dead ends: 38 [2019-10-14 23:52:59,711 INFO L226 Difference]: Without dead ends: 27 [2019-10-14 23:52:59,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-14 23:52:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-14 23:52:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:52:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-14 23:52:59,724 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2019-10-14 23:52:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:59,724 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-14 23:52:59,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:52:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-14 23:52:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 23:52:59,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:59,726 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:59,726 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2051596356, now seen corresponding path program 1 times [2019-10-14 23:52:59,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019898591] [2019-10-14 23:52:59,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:00,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019898591] [2019-10-14 23:53:00,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750424981] [2019-10-14 23:53:00,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:53:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:00,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 23:53:00,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:53:00,479 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-10-14 23:53:00,479 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:53:00,493 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:53:00,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:53:00,496 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:24 [2019-10-14 23:53:00,609 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:53:00,610 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2019-10-14 23:53:00,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:00,619 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:53:00,640 INFO L567 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2019-10-14 23:53:00,643 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:53:00,643 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:7 [2019-10-14 23:53:00,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:53:00,727 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:53:00,833 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2019-10-14 23:53:00,846 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2019-10-14 23:53:00,847 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-14 23:53:00,852 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:53:00,852 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-10-14 23:53:00,858 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:53:00,860 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-14 23:53:00,860 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:14 [2019-10-14 23:53:00,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:53:00,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [620979196] [2019-10-14 23:53:00,967 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 23 [2019-10-14 23:53:01,013 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:53:01,014 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:53:01,135 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:53:01,137 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 27 variables. [2019-10-14 23:53:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:01,144 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:53:01,219 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-14 23:53:01,219 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:53:01,232 INFO L553 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-10-14 23:53:01,233 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:53:01,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:53:01,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 10, 10] total 28 [2019-10-14 23:53:01,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473891780] [2019-10-14 23:53:01,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:53:01,236 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:01,236 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:53:01,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:53:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:53:01,237 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-10-14 23:53:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:01,245 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-14 23:53:01,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:01,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-10-14 23:53:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:01,246 INFO L225 Difference]: With dead ends: 27 [2019-10-14 23:53:01,246 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:53:01,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:53:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:53:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:53:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:53:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:53:01,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-14 23:53:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:01,249 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:53:01,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:53:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:53:01,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:53:01,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:53:01,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:53:01,527 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,528 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:53:01,528 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,528 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,528 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647) (= ~MAX~0 100000)) [2019-10-14 23:53:01,529 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:53:01,529 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,529 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 36) no Hoare annotation was computed. [2019-10-14 23:53:01,529 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 26) no Hoare annotation was computed. [2019-10-14 23:53:01,529 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2019-10-14 23:53:01,529 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 28) no Hoare annotation was computed. [2019-10-14 23:53:01,530 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 28) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:53:01,530 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 28) no Hoare annotation was computed. [2019-10-14 23:53:01,530 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 34) no Hoare annotation was computed. [2019-10-14 23:53:01,530 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 36) no Hoare annotation was computed. [2019-10-14 23:53:01,530 INFO L443 ceAbstractionStarter]: For program point L13-1(lines 13 34) no Hoare annotation was computed. [2019-10-14 23:53:01,531 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:53:01,531 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-10-14 23:53:01,531 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 10 36) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648))) (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647))) [2019-10-14 23:53:01,531 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 33) no Hoare annotation was computed. [2019-10-14 23:53:01,532 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 33) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:53:01,532 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,532 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-14 23:53:01,532 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,533 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,533 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,533 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:53:01 BoogieIcfgContainer [2019-10-14 23:53:01,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:53:01,548 INFO L168 Benchmark]: Toolchain (without parser) took 3372.89 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 101.3 MB in the beginning and 113.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,549 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.71 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,551 INFO L168 Benchmark]: Boogie Preprocessor took 119.96 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 180.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,552 INFO L168 Benchmark]: RCFGBuilder took 312.43 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 166.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,553 INFO L168 Benchmark]: TraceAbstraction took 2650.27 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 165.4 MB in the beginning and 113.8 MB in the end (delta: 51.5 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,563 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.71 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.96 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 180.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.43 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 166.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2650.27 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 165.4 MB in the beginning and 113.8 MB in the end (delta: 51.5 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 18 SDslu, 37 SDs, 0 SdLazy, 25 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 106 ConstructedInterpolants, 4 QuantifiedInterpolants, 11142 SizeOfPredicates, 12 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 7/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 178, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9464285714285714, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9047619047619048, AVG_WEAKENED_CONJUNCTS: 1.0476190476190477, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...